Kalmar “genus” tana nufin matsayi na haraji da aka yi amfani da shi wajen rarrabuwar halittu, wanda ke sama da nau’in halitta da ƙasa da iyali. Kalmar "Pachycephala" tana nufin jinsin tsuntsaye masu wucewa a cikin iyali Pachycephalidae, wanda aka fi sani da masu bushewa ko thickheads. Saboda haka, ma'anar ƙamus na kalmar "genus Pachycephala" ita ce rarrabuwa taxonomic ga ƙungiyar tsuntsaye da aka sani da masu bushewa ko kauri na dangin Pachycephalidae.